$ git clone -n https://src.fedoraproject.org/rpms/perl-Sentry-Raven.git /var/lib/mock/f45-build-26219-616/root/chroot_tmpdir/scmroot/perl-Sentry-Raven
Cloning into '/var/lib/mock/f45-build-26219-616/root/chroot_tmpdir/scmroot/perl-Sentry-Raven'...
$ git fetch origin 6ba29a463bceab9d237b56c2ac8320498df0bd4c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Sentry-Raven
 * [new ref]         6ba29a463bceab9d237b56c2ac8320498df0bd4c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6ba29a4 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild