$ git clone -n https://src.fedoraproject.org/rpms/libuev.git /var/lib/mock/f45-build-17144-496/root/chroot_tmpdir/scmroot/libuev
Cloning into '/var/lib/mock/f45-build-17144-496/root/chroot_tmpdir/scmroot/libuev'...
$ git fetch origin 37937c67e0c635064ab810d01ff90ab67f72542c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libuev
 * [new ref]         37937c67e0c635064ab810d01ff90ab67f72542c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 37937c6 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild