$ git clone -n https://src.fedoraproject.org/rpms/kdiamond.git /var/lib/mock/f39-build-1686148-41084/root/chroot_tmpdir/scmroot/kdiamond
Cloning into '/var/lib/mock/f39-build-1686148-41084/root/chroot_tmpdir/scmroot/kdiamond'...
$ git fetch origin 6e3de370ac329894ac70d13fb844566fe39377e0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kdiamond
 * [new ref]         6e3de370ac329894ac70d13fb844566fe39377e0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6e3de37 23.08.3