$ git clone -n https://src.fedoraproject.org/rpms/snapd.git /var/lib/mock/epel8-build-61046597-6588127/root/chroot_tmpdir/scmroot/snapd
Cloning into '/var/lib/mock/epel8-build-61046597-6588127/root/chroot_tmpdir/scmroot/snapd'...
$ git fetch origin aa6e3b7d5e088b2aedb1ed56212466a306c3d47c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/snapd
 * [new ref]         aa6e3b7d5e088b2aedb1ed56212466a306c3d47c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aa6e3b7 New upstream release 2.70