$ git clone -n https://src.fedoraproject.org/rpms/python-mechanize.git /var/lib/mock/f45-build-31514-652/root/chroot_tmpdir/scmroot/python-mechanize
Cloning into '/var/lib/mock/f45-build-31514-652/root/chroot_tmpdir/scmroot/python-mechanize'...
$ git fetch origin 68daa377483f8286d3e90a1849ebe3328f4a5150:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-mechanize
 * [new ref]         68daa377483f8286d3e90a1849ebe3328f4a5150 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 68daa37 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild