$ git clone -n https://src.fedoraproject.org/rpms/python-pkginfo.git /var/lib/mock/f43-build-61058654-6588312/root/chroot_tmpdir/scmroot/python-pkginfo
Cloning into '/var/lib/mock/f43-build-61058654-6588312/root/chroot_tmpdir/scmroot/python-pkginfo'...
$ git fetch origin 3e5cb8aceb7742d0cd9aa4e2b3eca0ff251d090d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-pkginfo
 * [new ref]         3e5cb8aceb7742d0cd9aa4e2b3eca0ff251d090d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3e5cb8a Convert to pyproject-rpm-macros