$ git clone -n https://src.fedoraproject.org/rpms/libepoxy.git /var/lib/mock/f45-build-16134-483/root/chroot_tmpdir/scmroot/libepoxy
Cloning into '/var/lib/mock/f45-build-16134-483/root/chroot_tmpdir/scmroot/libepoxy'...
$ git fetch origin 5a85931ca908dd8b20ca4ebd85011023c5d93b6b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libepoxy
 * [new ref]         5a85931ca908dd8b20ca4ebd85011023c5d93b6b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5a85931 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild