$ git clone -n https://src.fedoraproject.org/rpms/merkuro.git /var/lib/mock/f40-build-2670182-67301/root/chroot_tmpdir/scmroot/merkuro
Cloning into '/var/lib/mock/f40-build-2670182-67301/root/chroot_tmpdir/scmroot/merkuro'...
$ git fetch origin 1dfcd54e8dc6d74d1fd77ef7f75853f141dc44ae:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/merkuro
 * [new ref]         1dfcd54e8dc6d74d1fd77ef7f75853f141dc44ae -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1dfcd54 24.02.1