$ git clone -n https://src.fedoraproject.org/rpms/pacman.git /var/lib/mock/f39-build-2035053-47902/root/chroot_tmpdir/scmroot/pacman
Cloning into '/var/lib/mock/f39-build-2035053-47902/root/chroot_tmpdir/scmroot/pacman'...
$ git fetch origin 6926b1191bcdc5d4e02d1a80e7423ee632fb4c6b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pacman
 * [new ref]         6926b1191bcdc5d4e02d1a80e7423ee632fb4c6b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6926b11 Convert license tags to SPDX