$ git clone -n https://src.fedoraproject.org/rpms/perl-Mojolicious.git /var/lib/mock/f45-build-24945-607/root/chroot_tmpdir/scmroot/perl-Mojolicious
Cloning into '/var/lib/mock/f45-build-24945-607/root/chroot_tmpdir/scmroot/perl-Mojolicious'...
$ git fetch origin 570a1c7373184430adb5c954f7738c5c5cc3c86c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Mojolicious
 * [new ref]         570a1c7373184430adb5c954f7738c5c5cc3c86c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 570a1c7 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild