$ git clone -n https://src.fedoraproject.org/rpms/snapd.git /var/lib/mock/f45-build-36153-701/root/chroot_tmpdir/scmroot/snapd
Cloning into '/var/lib/mock/f45-build-36153-701/root/chroot_tmpdir/scmroot/snapd'...
$ git fetch origin 51e240cada2992436777290aa6266795a4d6a0ca:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/snapd
 * [new ref]         51e240cada2992436777290aa6266795a4d6a0ca -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 51e240c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild