$ git clone -n https://src.fedoraproject.org/rpms/pam.git /var/lib/mock/f40-build-2014447-45975/root/chroot_tmpdir/scmroot/pam
Cloning into '/var/lib/mock/f40-build-2014447-45975/root/chroot_tmpdir/scmroot/pam'...
$ git fetch origin d528fb77e19174f112926651842a47713042c7f2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pam
 * [new ref]         d528fb77e19174f112926651842a47713042c7f2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d528fb7 Suggest libdb-convert-util (#2245149 and #1788543)