$ git clone -n https://src.fedoraproject.org/rpms/pam_wrapper.git /var/lib/mock/f41-build-side-1-2650370-27586/root/chroot_tmpdir/scmroot/pam_wrapper
Cloning into '/var/lib/mock/f41-build-side-1-2650370-27586/root/chroot_tmpdir/scmroot/pam_wrapper'...
$ git fetch origin a84de9e726ce995326803a6342e973977b18d5dc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pam_wrapper
 * [new ref]         a84de9e726ce995326803a6342e973977b18d5dc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a84de9e convert GPLv3+ license to SPDX