$ git clone -n https://src.fedoraproject.org/rpms/rubygem-guard-shell.git /var/lib/mock/f40-build-2033803-47841/root/chroot_tmpdir/scmroot/rubygem-guard-shell
Cloning into '/var/lib/mock/f40-build-2033803-47841/root/chroot_tmpdir/scmroot/rubygem-guard-shell'...
$ git fetch origin 606917829931df940a2295808028eb2c21a6bc26:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-guard-shell
 * [new ref]         606917829931df940a2295808028eb2c21a6bc26 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6069178 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild