$ git clone -n https://src.fedoraproject.org/rpms/pgp-tools.git /var/lib/mock/f45-build-27842-626/root/chroot_tmpdir/scmroot/pgp-tools
Cloning into '/var/lib/mock/f45-build-27842-626/root/chroot_tmpdir/scmroot/pgp-tools'...
$ git fetch origin 63650736c4840c7f7b0ba8c89a318923b851f56b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pgp-tools
 * [new ref]         63650736c4840c7f7b0ba8c89a318923b851f56b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6365073 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild