$ git clone -n https://src.fedoraproject.org/rpms/perl-Compress-Raw-Bzip2.git /var/lib/mock/eln-build-side-114847-60997251-6587467/root/chroot_tmpdir/scmroot/perl-Compress-Raw-Bzip2
Cloning into '/var/lib/mock/eln-build-side-114847-60997251-6587467/root/chroot_tmpdir/scmroot/perl-Compress-Raw-Bzip2'...
$ git fetch origin 7fe26e204ab51c3c9d9cc3e121ebc0ea93879766:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Compress-Raw-Bzip2
 * [new ref]         7fe26e204ab51c3c9d9cc3e121ebc0ea93879766 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7fe26e2 Perl 5.42 re-rebuild of bootstrapped packages