$ git clone -n https://src.fedoraproject.org/rpms/rubygem-clockwork.git /var/lib/mock/f39-test-2570514-62238/root/chroot_tmpdir/scmroot/rubygem-clockwork
Cloning into '/var/lib/mock/f39-test-2570514-62238/root/chroot_tmpdir/scmroot/rubygem-clockwork'...
$ git fetch origin 2175354562016dab046e1b09fe4ecbef0c6d586f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-clockwork
 * [new ref]         2175354562016dab046e1b09fe4ecbef0c6d586f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2175354 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild