$ git clone -n https://src.fedoraproject.org/rpms/golang-gopkg-logex-1.git /var/lib/mock/f45-build-12674-443/root/chroot_tmpdir/scmroot/golang-gopkg-logex-1
Cloning into '/var/lib/mock/f45-build-12674-443/root/chroot_tmpdir/scmroot/golang-gopkg-logex-1'...
$ git fetch origin 31c2d34439213316ff82ee13031815737c08012d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-gopkg-logex-1
 * [new ref]         31c2d34439213316ff82ee13031815737c08012d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 31c2d34 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild