$ git clone -n https://src.fedoraproject.org/rpms/libsamplerate.git /var/lib/mock/f45-build-16923-493/root/chroot_tmpdir/scmroot/libsamplerate
Cloning into '/var/lib/mock/f45-build-16923-493/root/chroot_tmpdir/scmroot/libsamplerate'...
$ git fetch origin 9b8f90cbcecc24679b985ee32bbfec9caa7c488a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libsamplerate
 * [new ref]         9b8f90cbcecc24679b985ee32bbfec9caa7c488a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9b8f90c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild