$ git clone -n https://src.fedoraproject.org/rpms/golang-github-cmd.git /var/lib/mock/f45-build-11790-435/root/chroot_tmpdir/scmroot/golang-github-cmd
Cloning into '/var/lib/mock/f45-build-11790-435/root/chroot_tmpdir/scmroot/golang-github-cmd'...
$ git fetch origin 38c1f9561cb17e4cbe65b16395982338c70582e2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-cmd
 * [new ref]         38c1f9561cb17e4cbe65b16395982338c70582e2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 38c1f95 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild