$ git clone -n https://src.fedoraproject.org/rpms/pd-mapper.git /var/lib/mock/f39-build-1509973-35463/root/chroot_tmpdir/scmroot/pd-mapper
Cloning into '/var/lib/mock/f39-build-1509973-35463/root/chroot_tmpdir/scmroot/pd-mapper'...
$ git fetch origin 186aa6aedb07d589037a1da327481a289f83ed96:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pd-mapper
 * [new ref]         186aa6aedb07d589037a1da327481a289f83ed96 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 186aa6a Initial import; Fixes: RHBZ#2221425