$ git clone -n https://src.fedoraproject.org/rpms/kalm.git /var/lib/mock/f42-build-side-1-3534259-46548/root/chroot_tmpdir/scmroot/kalm
Cloning into '/var/lib/mock/f42-build-side-1-3534259-46548/root/chroot_tmpdir/scmroot/kalm'...
$ git fetch origin a6fc7281c48fddba790680f64cee5e3e8fa76359:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kalm
 * [new ref]         a6fc7281c48fddba790680f64cee5e3e8fa76359 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a6fc728 25.04.2