$ git clone -n https://src.fedoraproject.org/rpms/python-httpcore.git /var/lib/mock/f45-build-30993-649/root/chroot_tmpdir/scmroot/python-httpcore
Cloning into '/var/lib/mock/f45-build-30993-649/root/chroot_tmpdir/scmroot/python-httpcore'...
$ git fetch origin 908b7e07da9e42c59822d376d01203bfc4464e63:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-httpcore
 * [new ref]         908b7e07da9e42c59822d376d01203bfc4464e63 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 908b7e0 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild