$ git clone -n https://src.fedoraproject.org/rpms/perl-JavaScript-Beautifier.git /var/lib/mock/f45-build-24352-603/root/chroot_tmpdir/scmroot/perl-JavaScript-Beautifier
Cloning into '/var/lib/mock/f45-build-24352-603/root/chroot_tmpdir/scmroot/perl-JavaScript-Beautifier'...
$ git fetch origin 6020f84516eb65596910dbd644096065551e9396:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-JavaScript-Beautifier
 * [new ref]         6020f84516eb65596910dbd644096065551e9396 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6020f84 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild