$ git clone -n https://src.fedoraproject.org/rpms/golang-github-zcalusic-sysinfo.git /var/lib/mock/f38-build-side-42-init-devel-663250-26640/root/chroot_tmpdir/scmroot/golang-github-zcalusic-sysinfo
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-663250-26640/root/chroot_tmpdir/scmroot/golang-github-zcalusic-sysinfo'...
$ git fetch origin 481e6e5376970a052cd590017b7fe6851bed1093:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-zcalusic-sysinfo
 * [new ref]         481e6e5376970a052cd590017b7fe6851bed1093 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 481e6e5 Initial package (RHBZ#2176241)