$ git clone -n https://src.fedoraproject.org/rpms/mrrescue.git /var/lib/mock/f38-build-side-42-init-devel-1096793-30070/root/chroot_tmpdir/scmroot/mrrescue
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1096793-30070/root/chroot_tmpdir/scmroot/mrrescue'...
$ git fetch origin b2d3c30007f26fc0d184834f2aebb0d457de6c8a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mrrescue
 * [new ref]         b2d3c30007f26fc0d184834f2aebb0d457de6c8a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b2d3c30 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild