$ git clone -n https://src.fedoraproject.org/rpms/libtool.git /var/lib/mock/f45-bootstrap-294-176/root/chroot_tmpdir/scmroot/libtool
Cloning into '/var/lib/mock/f45-bootstrap-294-176/root/chroot_tmpdir/scmroot/libtool'...
$ git fetch origin 53bc5c8c64bebb7566203686ee49655ea2361990:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libtool
 * [new ref]         53bc5c8c64bebb7566203686ee49655ea2361990 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 53bc5c8 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild