$ git clone -n https://src.fedoraproject.org/rpms/pam.git /var/lib/mock/f45-build-43697-805/root/chroot_tmpdir/scmroot/pam
Cloning into '/var/lib/mock/f45-build-43697-805/root/chroot_tmpdir/scmroot/pam'...
$ git fetch origin b3719c92aba8f527a080497d7eca5a2bb34c75ee:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pam
 * [new ref]         b3719c92aba8f527a080497d7eca5a2bb34c75ee -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b3719c9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild