$ git clone -n https://src.fedoraproject.org/rpms/glibc.git /var/lib/mock/f40-build-2280346-55391/root/chroot_tmpdir/scmroot/glibc
Cloning into '/var/lib/mock/f40-build-2280346-55391/root/chroot_tmpdir/scmroot/glibc'...
$ git fetch origin b11c9771f72dffde4c755a940879f4a123a773c8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/glibc
 * [new ref]         b11c9771f72dffde4c755a940879f4a123a773c8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b11c977 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild