$ git clone -n https://src.fedoraproject.org/rpms/gmailctl.git /var/lib/mock/f45-build-11325-429/root/chroot_tmpdir/scmroot/gmailctl
Cloning into '/var/lib/mock/f45-build-11325-429/root/chroot_tmpdir/scmroot/gmailctl'...
$ git fetch origin f4821bdbcd4f3f6b63215debadc9ee8cfa1818b8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gmailctl
 * [new ref]         f4821bdbcd4f3f6b63215debadc9ee8cfa1818b8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f4821bd Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild