$ git clone -n https://src.fedoraproject.org/rpms/perl-Catalyst-Runtime.git /var/lib/mock/f39-build-1453081-32870/root/chroot_tmpdir/scmroot/perl-Catalyst-Runtime
Cloning into '/var/lib/mock/f39-build-1453081-32870/root/chroot_tmpdir/scmroot/perl-Catalyst-Runtime'...
$ git fetch origin 6645a88388d3f2d2056eee11c78bee506d219348:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Catalyst-Runtime
 * [new ref]         6645a88388d3f2d2056eee11c78bee506d219348 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6645a88 Update to 5.90131