$ git clone -n https://src.fedoraproject.org/rpms/ktimer.git /var/lib/mock/f42-build-side-1-3499013-45964/root/chroot_tmpdir/scmroot/ktimer
Cloning into '/var/lib/mock/f42-build-side-1-3499013-45964/root/chroot_tmpdir/scmroot/ktimer'...
$ git fetch origin aa7bb1038536b0cc273b9bce7f6a1949a3f70f99:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ktimer
 * [new ref]         aa7bb1038536b0cc273b9bce7f6a1949a3f70f99 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aa7bb10 25.04.0