$ git clone -n https://src.fedoraproject.org/rpms/perl-Proc-SyncExec.git /var/lib/mock/f45-build-25952-613/root/chroot_tmpdir/scmroot/perl-Proc-SyncExec
Cloning into '/var/lib/mock/f45-build-25952-613/root/chroot_tmpdir/scmroot/perl-Proc-SyncExec'...
$ git fetch origin 932f63d7ff2ae395f21f1f17187f0583f4ee0572:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Proc-SyncExec
 * [new ref]         932f63d7ff2ae395f21f1f17187f0583f4ee0572 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 932f63d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild