$ git clone -n https://src.fedoraproject.org/rpms/python-bleach.git /var/lib/mock/f45-build-29793-641/root/chroot_tmpdir/scmroot/python-bleach
Cloning into '/var/lib/mock/f45-build-29793-641/root/chroot_tmpdir/scmroot/python-bleach'...
$ git fetch origin 49cef178a9c7cac71ea469e0940cb417a591ecee:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-bleach
 * [new ref]         49cef178a9c7cac71ea469e0940cb417a591ecee -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 49cef17 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild