$ git clone -n https://src.fedoraproject.org/rpms/perl-Devel-LeakGuard-Object.git /var/lib/mock/f45-build-23148-596/root/chroot_tmpdir/scmroot/perl-Devel-LeakGuard-Object
Cloning into '/var/lib/mock/f45-build-23148-596/root/chroot_tmpdir/scmroot/perl-Devel-LeakGuard-Object'...
$ git fetch origin 2d464f0eb36c9eb93c688373720e96995e6fc310:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Devel-LeakGuard-Object
 * [new ref]         2d464f0eb36c9eb93c688373720e96995e6fc310 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2d464f0 0.09 bump (rhbz#2510677)