$ git clone -n https://src.fedoraproject.org/rpms/perl-Icon-FamFamFam-Silk.git /var/lib/mock/f45-build-24240-602/root/chroot_tmpdir/scmroot/perl-Icon-FamFamFam-Silk
Cloning into '/var/lib/mock/f45-build-24240-602/root/chroot_tmpdir/scmroot/perl-Icon-FamFamFam-Silk'...
$ git fetch origin b06b2b0841a7c82b1de77716dbb4f642d2830bfc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Icon-FamFamFam-Silk
 * [new ref]         b06b2b0841a7c82b1de77716dbb4f642d2830bfc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b06b2b0 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild