$ git clone -n https://src.fedoraproject.org/rpms/yggdrasil.git /var/lib/mock/f38-build-side-42-init-devel-953989-28786/root/chroot_tmpdir/scmroot/yggdrasil
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-953989-28786/root/chroot_tmpdir/scmroot/yggdrasil'...
$ git fetch origin 269a39fc0b6b5bb4bb2395767414aa363e599901:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/yggdrasil
 * [new ref]         269a39fc0b6b5bb4bb2395767414aa363e599901 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 269a39f Include D-Bus interface files in devel package