$ git clone -n https://src.fedoraproject.org/rpms/kalk.git /var/lib/mock/f40-build-1503946-23882/root/chroot_tmpdir/scmroot/kalk
Cloning into '/var/lib/mock/f40-build-1503946-23882/root/chroot_tmpdir/scmroot/kalk'...
$ git fetch origin f7cb4988e5ca197b1ebff4e96fe5df8298445e9c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kalk
 * [new ref]         f7cb4988e5ca197b1ebff4e96fe5df8298445e9c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f7cb498 24.05.0