$ git clone -n https://src.fedoraproject.org/rpms/merkuro.git /var/lib/mock/f40-build-2264895-54576/root/chroot_tmpdir/scmroot/merkuro
Cloning into '/var/lib/mock/f40-build-2264895-54576/root/chroot_tmpdir/scmroot/merkuro'...
$ git fetch origin de87036f69232714fdb34dae7d7ed68a96d87242:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/merkuro
 * [new ref]         de87036f69232714fdb34dae7d7ed68a96d87242 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at de87036 24.01.90