$ git clone -n https://src.fedoraproject.org/rpms/rubygem-guard-shell.git /var/lib/mock/f38-build-side-42-init-devel-583534-26086/root/chroot_tmpdir/scmroot/rubygem-guard-shell
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-583534-26086/root/chroot_tmpdir/scmroot/rubygem-guard-shell'...
$ git fetch origin ec04b0c9ea8b0310155dd3d9223b79751dc05803:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-guard-shell
 * [new ref]         ec04b0c9ea8b0310155dd3d9223b79751dc05803 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ec04b0c Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild