$ git clone -n https://src.fedoraproject.org/rpms/kalm.git /var/lib/mock/f42-build-side-1-3497634-45961/root/chroot_tmpdir/scmroot/kalm
Cloning into '/var/lib/mock/f42-build-side-1-3497634-45961/root/chroot_tmpdir/scmroot/kalm'...
$ git fetch origin 5123b427603743c0dc467f0d023966d7285aa2c5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kalm
 * [new ref]         5123b427603743c0dc467f0d023966d7285aa2c5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5123b42 25.04.0