$ git clone -n https://src.fedoraproject.org/rpms/golang-github-alecthomas-units.git /var/lib/mock/f38-build-side-42-init-devel-674699-26685/root/chroot_tmpdir/scmroot/golang-github-alecthomas-units
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-674699-26685/root/chroot_tmpdir/scmroot/golang-github-alecthomas-units'...
$ git fetch origin aba0861178a1d64a0e9d6d5595f59fe3ba616bd0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-alecthomas-units
 * [new ref]         aba0861178a1d64a0e9d6d5595f59fe3ba616bd0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aba0861 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild